... amplify the sound coming out of its speakers. And when someone rings your doorbell, a tiny electromagnet pulls a metal clapper against a bell. Mechanically, an electromagnet is pretty simple. It consists of a length of conductive wire, ...

... band uses electromagnets to amplify the sound coming out of its speakers. And when someone rings your doorbell, a tiny electromagnet pulls a metal clapper against a bell. Me-chanically, an electromagnet is pretty simple. It consists of a ...

... Here's what the magnetic fields look like in a basic electromagnet. Hemera/ Thinkstock Putting the “Electro” in “Electromagnet” Since an electrical current is required to op-erate an electromagnet, where does it come from? The ...

... Quizzes Home / Science / Physical Science / Magnetism How to Make an Electr-omagnet by HowStuffWorks.com Contributors You can make a super powerful electromagnet in less than half of an hour. All you need are a few things that ...

... one to the negative terminal (it doesn’t matter which end of the wire gets paired with which terminal). Presto! A working electromagnet [source: Jefferson Lab ]. Can't get enough of hands-on electromagnetic experiments? We have some ...

... History of Electromagnets 3 The Sticking Power of Electromagnets 4 Putting the “Ele-ctro” in “Electromagnet” A simple electromagnet HowStuffWorks The Sticking Power of Electromagnets As we mentioned in the introduction, basic ...

... is actually used to control their speed and trajectory [source: NOVA Teachers ]. Not a bad resume for our friend the electromagnet, huh? From something you can create in your garage to operating the tools that scientists and engineers are ...

... Work Electric Motor Quiz How Compasses Work How Maglev Trains Work How Electrom-agnetic Propulsion Will Work How to Make an Electromagnet Sources “Electromagnets.” Encyclopædia Britannica Online. (Sep 23. 2011) http://www.britannica.co ...

... Science Dictionary Science Vs. Myth Space Transportation Home / Science / Phys-ical Science / Magnetism ElectromagnetElectromagnet, a device that has magnetic pr-operties only when an electric current is applied to it. The ...